code: def __exit__(self, exc_type, exc_instance, traceback) -> None:
      if _INTRA_PG is not None:
          dist.destroy_process_group(_INTRA_PG)
      if _CROSS_PG is not None:
          dist.destroy_process_group(_CROSS_PG)
      dist.destroy_process_group(self.pg)
      torch.use_deterministic_algorithms(False)
      if torch.cuda.is_available():
          torch.backends.cudnn.allow_tf32 = True
  
file_path: torchrec/torchrec/distributed/test_utils/multi_process.py
imports: import multiprocessing
  import os
  import unittest
  from typing import Any, Callable, Dict, List, Optional
  import torch
  import torch.distributed
  from torchrec.distributed.comm import _CROSS_PG, _INTRA_PG
  from torchrec.test_utils import get_free_port, init_distributed_single_host, seed_and_log
label_desc: Use image node_id 3 for calling the MultiProcessContext obj's underlying member method code with example usage: obj.__exit__(exc_type, exc_instance, traceback) without return types